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Note 8 - Long-term Debt (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Long-Term Debt Instruments [Table Text Block]
   

2022

   

2021

 
                 

Equipment loan payable in monthly repayments of $8 including interest at 6% per annum (1)

  $ 426       -  
                 

Mortgage loan secured by building payable in monthly repayments of $25 plus interest at LIBOR plus 1.75% or bank’s prime rate minus 0.5% (2)

    -       1,766  
                 

Total long-term debt

    426       1,766  

Less: current maturities

    77       1,766  
                 

Long-term debt, net of current maturities

  $ 349     $ -  
Schedule of Maturities of Long-Term Debt [Table Text Block]
2023   $ 77  
2024     81  
2025     87  
2026     92  
2027     89  
         

Total

  $ 426